Which statement is NOT true about the development of an action potential?
A)There is a rapid change in polarity from about -65 mV to about +40 mV.
B)It requires two types of gated channels.
C)The action potential ends when the polarity across the membrane reaches +40 mV.
D)Depolarization occurs when sodium gates open and allow sodium ions to enter the cell.
E)Potassium gates open after the sodium gates and allow potassium ions to leave the cell.

Question

Quizplus · Accepted Answer

The action potential does not end when the polarity across the membrane reaches +40 mV. Instead, after reaching this point, repolarization occurs as potassium gated channels open and allow potassium ions to exit the cell, returning the membrane to its resting potential.

Which Statement Is NOT True About the Development of an Action